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Date:      Fri, 5 Jan 2001 09:51:42 +0200
From:      Peter Pentchev <roam@orbitel.bg>
To:        Graham Wheeler <gram@cequrux.com>
Cc:        Warner Losh <imp@bsdimp.com>, hackers@FreeBSD.ORG
Subject:   Re: Just how standard is APM?
Message-ID:  <20010105095142.A10329@ringworld.oblivion.bg>
In-Reply-To: <3A556040.6B9163BB@cequrux.com>; from gram@cequrux.com on Fri, Jan 05, 2001 at 07:48:48AM %2B0200
References:  <3A545615.3597BCF3@cequrux.com> <200101042234.f04MYM147333@harmony.village.org> <3A556040.6B9163BB@cequrux.com>

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On Fri, Jan 05, 2001 at 07:48:48AM +0200, Graham Wheeler wrote:
> Warner Losh wrote:
> > 
> > APM is standard.  Except when it is broken in some brain damaged ways.
> > 
> > However, you likely have your apm device disabled in your kernel and
> > all you need to do is enable it.
> > 
> 
> Nope - as I said, I added log messages to apm.c to log the BIOS probe
> and they log a failure (I have "device apm0" in my config file).

I think I've heard rumors of some BIOS's only supporting APM in real mode;
and also rumors that this was the reason for Windows sometimes shutting
down so slowly - it has to do a switch to real mode to make the APM
poweroff calls.  Feel free to correct me if I've heard wrong :)

I *know* APM in 4.2-stable did not and does not work on my laptop (some
kind of Asus).  The ACPI from -current worked fine once when I tested it,
but I had to go back to -stable for various reasons, and now I've already
gotten used to turning it off by hand after the shutdown command.
(Note: no bad feelings here, if it's the BIOS's fault, there's nothing
the FreeBSD developers can do about it; and no, I would not want anyone
to add mode switching code to FreeBSD solely for shutdown purposes :)

G'luck,
Peter

-- 
Hey, out there - is it *you* reading me, or is it someone else?


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